This study aims to evaluate the acceptability of a new non-invasive screening device to test for Barrett's esophagus. The investigators will prospectively enroll 100 patients to undergo Cytosponge testing. The time of involvement for an individual will range from 2 weeks to 2 months, depending on the results of the Cytosponge test and time to follow up endoscopy, if indicated. The Cytosponge consists of a 3cm diameter, polyester, medical grade spherical sponge on a string, compressed within a gelatin capsule. The capsule is swallowed while the patient or the research specialist holds onto the...